Retrospective Cohort Study
Copyright ©The Author(s) 2024.
World J Orthop. Jul 18, 2024; 15(7): 608-617
Published online Jul 18, 2024. doi: 10.5312/wjo.v15.i7.608
Table 3 Factors predicting return to daily activities, work, and sports within 6 mo after total knee arthroplasty
ActivitynR2Predictive factorsOR (95%CI)P value
Daily activities
Night rest19010.029Sex0.734 (0.589-0.913)0.006b
ASA1.217 (0.989-1.498)0.064
Previous surgery0.829 (0.670-1.025)0.083
Operative duration0.989 (0.978-1.000)0.047a
NRS pain at rest0.912 (0.863-0.964)0.001b
NRS pain during activity1.080 (1.003-1.163)0.042a
OKS1.020 (1.002-1.038)0.030a
Walking without aids19010.033Sex0.681 (0.456-1.016)0.06
Anesthesia technique4.456 (1.232-16.120)0.023a
OKS1.054 (1.024-1.084)< 0.001b
Stair climbing19010.05BMI0.941 (0.908-0.975)< 0.001b
Sex0.499 (0.381-0.653)< 0.001b
Operative duration0.987 (0.974-1.000)0.053
OKS1.024 (1.006-1.043)0.010a
Grocery shopping19010.051Age0.960 (0.933-0.989)0.007b
BMI0.939 (0.886-0.996)0.037a
EQ-5D descriptive system0.299 (0.106-0.846)0.023a
OKS1.094 (1.052-1.137)< 0.001b
Domestic work19010.05Age0.958 (0.940-0.977)< 0.001b
BMI0.924 (0.889-0.961)< 0.001b
NRS pain during activity1.082 (0.995-1.178)0.067
OKS1.054 (1.031-1.078)< 0.001b
Putting on shoes/socks19010.067Sex2.794 (1.366-5.712)0.005b
OKS1.106 (1.052-1.163)< 0.001b
Kneeling19100.1BMI0.946 (0.917-0.976)< 0.001b
Sex0.433 (0.349-0.538)< 0.001b
Alcohol consumption1.305 (1.015-1.681)0.039a
KOOS-PS0.989 (0.978-1.001)0.083
OKS1.022 (1.000-1.044)0.048a
Driving a car18110.127Age0.966 (0.941-0.990)0.007b
Sex0.217 (0.140-0.337)< 0.001b
ASA0.678 (0.461-0.998)0.049a
Anesthesia technique3.815 (0.970-14.998)0.055
Charnley classification1.173 (0.988-1.391)0.068
OKS1.055 (1.028-1.083)< 0.001b
Outdoor cycling18060.123Age0.949 (0.931-0.967)< 0.001b
BMI0.937 (0.903-0.972)< 0.001b
Sex0.347 (0.266-0.452)< 0.001b
ASA0.763 (0.580-1.004)0.053
Charnley classification1.175 (1.041-1.326)0.009b
OKS1.032 (1.013-1.051)< 0.001b
Work
Low-impact work7650.026Age1.032 (0.999-1.065)0.054
EQ-5D descriptive system2.540 (1.150-5.612)0.021a
Medium-impact work4480.069Alcohol consumption1.497 (0.932-2.406)0.095
EQ VAS1.015 (1.004-1.027)0.007b
OKS1.030 (0.997-1.065)0.075
Sports
Low-impact sports17050.022Age1.038 (1.015-1.062)0.001b
ASA0.728 (0.519-1.021)0.066
EQ VAS1.009 (1.001-1.017)0.032a
Medium-impact sports7580.028Operative duration0.985 (0.971-1.000)0.044a
EQ VAS1.007 (0.999-1.016)0.071
OKS1.026 (1.004-1.048)0.018a
Swimming6580.013EQ-5D descriptive system0.398 (0.164-0.961)0.041a
OKS1.039 (1.007-1.071)0.016a